Finding the Fourth Proportional to 1,106.39, 1,526.89 and 664.27

Step by Step Solution

1. Step 1: Write the proportion equation
   1,106.39 : 1,526.89 = 664.27 : x
2. Step 2: Convert to fraction form
   1,106.39/1,526.89 = 664.27/x
3. Step 3: Cross multiply
   1,106.39x = 1,526.89 × 664.27
4. Step 4: Simplify right side
   1,106.39x = 1,014,267.22
5. Step 5: Solve for x
   x = 1,014,267.22/1,106.39
6. Step 6: Final answer
   x = 916.74